作者yasimii (蔚藍海岸)
看板GRE_Verbal
標題Re: [數學]請教!!
時間Wed Aug 1 22:01:08 2007
我可不可以請教 第二題 字面上的意思~
這應該是文法上的問題 不知道能不能在這邊問....
(不行的話 我會刪掉~ 謝謝~~~~ )
2. If 55 percent of a group of people have brown hair and
80 percent of the same group do NOT have red hair, what
fraction of those who do NOT have brown hair and red hair?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
請問 原題目是要求 "非棕髮" 及 "紅髮" 的比例
(do NOT have brown hair) and (red hair)
還是 "非棕髮" 及 "非紅髮" 的比例呢?
do NOT have (brown hair) and (red hair)
就解答來看 是前者 不過我一直覺得是後者....
不知道是不是在文法上我出了問題~
感謝解答~~
※ 引述《OdysseyGRE (Odyssey)》之銘言：
: 1. The "reflection" of a postive integer is obtained by
: reversing its digits. For example, 321 is the
: reflection of 123. The difference between a five-digit
: integer and its reflection must be divisible by which
: of the following?
: Ans: 9
: 2. If 55 percent of a group of people have brown hair and
: 80 percent of the same group do NOT have red hair, what
: fraction of those who do NOT have brown hair and red hair?
: Ans: 4/9
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※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.175.165.211
※ 編輯: yasimii 來自: 218.175.165.211 (08/01 22:03)
1F：推 Pluronics:4/9是(非棕髮)中(紅髮)比例 61.216.100.161 08/01 22:04
2F：→ Pluronics:who 指的是 those =分母 61.216.100.161 08/01 22:04
3F：→ Pluronics:原題沒有動詞與分子的定義 61.216.100.161 08/01 22:05
4F：→ Pluronics:and應該改成have就是4/9的答案 61.216.100.161 08/01 22:06
5F：推 yasimii:and 改成 have 就懂了~!!!218.175.165.211 08/01 22:08
6F：→ yasimii:另外阿~要分子的話 是不是把and改成to呢?218.175.165.211 08/01 22:12
7F：推 Pluronics:改成have就有分子了(red hair) 61.216.100.161 08/01 23:40